Understanding ADCs and Using the ADS1115 with Raspberry Pi Learn how analog signals become digital data, and how to connect the ADS1115 ADC to a Raspberry Pi for high-precision sensor measurements. Introduction One of the first surprises many Raspberry Pi users encounter is that the Pi has no built-in Analog-to-Digital Converter (ADC) . This means that while the Raspberry Pi excels at digital communication, it cannot directly read analog sensors such as: Potenti...